CN109485230A - A kind of deep dehydration pretreating process filling sludge - Google Patents
A kind of deep dehydration pretreating process filling sludge Download PDFInfo
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- CN109485230A CN109485230A CN201811532911.3A CN201811532911A CN109485230A CN 109485230 A CN109485230 A CN 109485230A CN 201811532911 A CN201811532911 A CN 201811532911A CN 109485230 A CN109485230 A CN 109485230A
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- sludge
- landfill
- viscosity
- sewage
- deep dehydration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Abstract
The present invention relates to a kind of deep dehydration pretreating process for filling sludge, comprising the following steps: (1) takes the excess sludge of sewage treatment plant to carry out viscosimetric analysis, obtain sewage sludge viscosity standard section；(2) the sewage sludge viscosity standard section obtained based on step (1), landfill sludge to be processed is diluted, its viscosity is measured again, so that the viscosity of the landfill sludge after dilution is in sewage sludge viscosity standard section, and is less than the maximum value in sewage sludge viscosity standard section；(3) chemical amendment is added into the landfill sludge after the completion of dilution, improves, then, dehydration obtains the deep dehydration pretreating sludge that moisture content is lower than 60%, and recycles sludge liquor for filling sludge dilution.Compared with prior art, the present invention is by effectively reducing the generation of dehydration liquid and pharmacy effect being made to obtain maximum performance using sewage sludge viscosity as the benchmark of landfill sludge dilute strength, the blank in the preconditioning technique field before having filled up landfill sludge conditioning.
Description
Technical field
The invention belongs to the technical field of sludge treatment of sludge landfill, the deep dehydration for being related to a kind of landfill sludge is located in advance
Science and engineering skill.
Background technique
Currently, the innoxious of sludge, stabilisation, minimizing and recycling treatment disposal technology are extensively studied.Sludge
Emergency landfill is used as a kind of final disposal means, can temporarily solve the problems, such as the dewatered whereabouts of excess sludge.However, with sludge
Landfill yard enters the generation of mineralising phase and a large amount of new primary sludges, and the exploitation and decrement treatment for filling sludge become urgently to be solved
Problem.Landfill yard exploitation means that the mineralising sludge in high landfill age becomes new research object, improves corresponding sludge conditioning skill
Art makes high landfill age sludge be suitable for secondary landfill or burn to be the key that solve the problems, such as.
Sludge conditioning dehydration can effectively reduce sludge volume and cut down transport and disposal costs.Due to sludge hydrophily is strong,
Dehydration is difficult, needs to improve using chemistry, physics or thermal technology's method, and wherein chemical conditioning method is because of its significant effect, operation
Simply, it is widely used by major sewage treatment plant.Currently, be rarely reported both at home and abroad for the chemical conditioning technology of landfill sludge,
And had differences before Sludge landfill in conditioning and dewatering type, cause landfill sludge shale widely different, in landfill sludge tune
Need to carry out it mud analysis before reason with the suitable conditioning means of determination.
Sludge landfill closes by long-term, produces huge variation when landfill sludge mud is compared to filling.Sludge exists
Lysis occurs under long-term anaerobic state and the rainwater of gas vent pours into, general age 10 years sludge of landfill can be reduced seven/
One, decrement is partially converted into the supernatant of sludge landfill.Mud analysis, which is carried out, in the sludge for being 10 years to landfill age finds it
The content of organic matter drops to 30% or so, and moisture content is 80% or so, in sposh shape and shapeless, it is difficult to reach " at town sewage
Manage factory's sludge treatment blended landfill shale " index request (sludge of blended landfill is used in (GB/T 23485-2009) standard
Moisture content≤60%).General deeply dehydrating sludge conditioning technology (lime-ferric trichloride system) is used to landfill sludge, just
It needs to be diluted it to guarantee that adding medicament can uniformly mix and sufficiently react.
Therefore, it needs to pay close attention to its dilute strength problem before landfill sludge dewatering conditioning.It is being based on butt sludge (mg/gDS)
Under identical dosage, the moisture content for the landfill sludge cake being press-filtered out increases (as shown in Fig. 2) with the reduction of concentration, table
Reveal poor conditioning effect.Illustrating to dilute excessive landfill sludge will lead to pharmacy effect and is also diluted, while also generate
More sludge liquors, increases processing load.And the insufficient landfill sludge of dilute strength then will lead to added amount of chemical and increase,
And medicament can not be mixed uniformly, and conditioning effect can also be deteriorated.Due to the difference of above-mentioned mud, fill the dilute strength of sludge with
It will lead to dilution on the basis of sludge concentration before general sewage plant deep dehydration excessively, so that it is bad conditioning effect occur, dehydration
A series of problems, such as liquid processing load aggravates.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of depths for filling sludge
Dehydration pre-process technique is spent, by being handled so that filling sludge using sewage sludge viscosity as the benchmark of landfill sludge dilute strength
It is more convenient for conveying in the process, medicament mixing conditioning also more sufficiently effectively, effectively reduces the generation of dehydration liquid and makes pharmacy effect
Maximum performance is obtained, the blank in the preconditioning technique field before having filled up landfill sludge conditioning.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of deep dehydration pretreating process filling sludge, comprising the following steps:
(1) it takes the excess sludge of sewage treatment plant to carry out viscosimetric analysis, sewage sludge viscosity standard section is obtained, at this time by institute
Using the influence of the conditions such as the type of excess sludge and minute, the viscosity of obtained excess sludge can be；
(2) the sewage sludge viscosity standard section obtained based on step (1), is diluted landfill sludge to be processed, then measure
Its viscosity so that the viscosity of the landfill sludge after dilution is in sewage sludge viscosity standard section, and is less than sewage sludge viscosity standard regions
Between maximum value；
(3) chemical amendment is added into the landfill sludge after the completion of step (2) gained dilution, improves, then, dehydration,
The deep dehydration pretreating sludge that moisture content is lower than 60% is obtained, and it is dirty to recycle landfill of the sludge liquor in step (2)
Mud dilution.
Further, in step (2), the moisture content of landfill sludge to be processed is 65~95%.
Further, in step (3), the chemical amendment is the compound tune of lysis reagent and framework construction body composition
Manage agent.
Further, in step (3), the lysis reagent is ferric trichloride, Fenton reagent, ferric sulfate of polymerized silica or secondary
One of sodium chlorate is several.
Further, in step (3), the framework construction body is one in lime, flyash or sludge incineration ash
Kind is several.
Further, in step (3), all chemical amendments are necessary for solution or wiring solution-forming, and chemical amendment is molten
The viscosity of liquid is less than the minimum value in sewage sludge viscosity standard section, to ensure that sewage sludge viscosity meets the requirement of blending transportation after improving.
Further, it in step (4), is dehydrated to be carried out by the way of plate compression.
Different sewage treatment plant because the difference of sewage treatment process leads to the excess sludge for producing different viscosities, use
Sludge delivery pump and sludge dewatering equipment are also different.Sewage plant is because its treatment conditions is relatively stable, generated excess sludge
Property also changes less, the mixing parameter of sludge conditioning dehydration, and the conditions such as conditioning reagent combination concentration are constantly being debugged
During, gradually adapt to self-produced excess sludge property.The angle chemically improved is set out, and is not changing other conditionings substantially
Under conditions of dehydration, the viscosity of dilution landfill sludge is adjusted to a viscosity interval range of sewage plant excess sludge, is made
Landfill sludge must be diluted can be utmostly on rheological properties close to the excess sludge of sewage plant.It is glued after filling sludge dilution
If degree is less than viscosity section, excessive dehydration liquid can be generated, pharmacy effect can be also diluted；If viscosity is after dilution if more than viscosity
Section then can make sludge be difficult to convey, and conditioning medicament is difficult to uniformly mix and react, and cause practical dehydration efficiency low.Viscous
Dirt can be more adapted in terms of conditioner is uniformly mixed with sludge with the similar landfill sludge that dilutes of excess sludge on degree
The actual production conditions of water factory.
The present invention has found that sludge is filled after the dilution of high concentration, and (concentration exists in actually carrying out landfill sludge dilution
70~100g/L) and general sewage plant deep dehydration conditioning before sludge (i.e. excess sludge, concentration is in 20~50g/L) show
Essentially identical flow regime.Analyze its reason, may because be prolonged anaerobic stabilization cause to fill sludge itself with
The content of organic matter of sludge liquid reduces, and the strong extracellular polymeric degradation mineralising of a large amount of hydrophilies causes under the viscosity of sludge entirety
Drop, so theoretically without being diluted to the throwing that can be carried out conditioner with the general consistent concentration of sewage plant deep dehydration sludge
Add.Based on the above principles, pre- before the conditioning that the viscosity in Hemorheological Indexes is applied to landfill yard sludge of the invention
In processing, the sludge rheological charactristics before sludge conditioning quantify and be used in the dilute strength judgement of landfill yard sludge,
To solve the problems, such as that conditioning adding of agent mixes, blank of the landfill sludge conditioning on preconditioning technique has been filled up.
Major part sludge landfill is still in the closed stablity stage both at home and abroad, future have successively sludge landfill because
Reach the reasons such as the time limit or land use to need to excavate, a large amount of landfill sludge in need of immediate treatment can be generated at that time.With existing skill
Art generally fills sludge dilution measure and compares, the invention has the following advantages that
(1) caused by capable of effectively being avoided after diluting excessively based on the suitable landfill sludge extension rate of viscosimetric analysis selection
The dilution of medicament conditioning effect, the moisture content after guaranteeing sludge press filtration while improving medicament utilization rate, which reaches corresponding disposition, to be wanted
It asks.
(2) based on the suitable landfill sludge extension rate of viscosimetric analysis selection, and reuse dehydration liquid is diluted, can either
It effectively avoids dilution excessively, and is able to achieve dehydration liquid reuse, greatly reduce dewatered wastewater treatment capacity.
(3) being sufficiently mixed while can also apply to other sewage plants landfill sludge for medicament is solved by viscosity index
Processing adapts to the dilution pretreatment of different type landfill sludge, overcomes traditional sludge conditioning and by virtue of experience carries out medicament throwing
The limitation added.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention；
Fig. 2 is the relationship of moisture content of the cake after sludge dilute strength and conditioning under fixed conditioning added amount of chemical；
Fig. 3 is the landfill sewage sludge viscosity of different dilute strengths and the relationship in the preceding excess sludge viscosity section of sewage plant conditioning.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
A kind of deep dehydration pretreating process of landfill sludge shown in Figure 1, comprising the following steps:
(1) it takes the excess sludge of sewage treatment plant to carry out viscosimetric analysis, sewage sludge viscosity standard section is obtained, at this time by institute
Using the influence of the conditions such as the type of excess sludge and minute, the viscosity of obtained excess sludge can be；
(2) the sewage sludge viscosity standard section obtained based on step (1), is diluted landfill sludge to be processed, then measure
Its viscosity so that the viscosity of the landfill sludge after dilution is in sewage sludge viscosity standard section, and is less than sewage sludge viscosity standard regions
Between maximum value；
(3) chemical amendment is added into the landfill sludge after the completion of step (2) gained dilution, improves, then, dehydration,
The deep dehydration pretreating sludge that moisture content is lower than 60% is obtained, and it is dirty to recycle landfill of the sludge liquor in step (2)
Mud dilution.
In step (2), the moisture content of landfill sludge to be processed is 65~95%.
In step (3), the chemical amendment is the composite conditioner of lysis reagent and framework construction body composition, described
Lysis reagent be one of ferric trichloride, Fenton reagent, ferric sulfate of polymerized silica or sodium hypochlorite or several, described skeletons
Construct is one of lime, flyash or sludge incineration ash or several.The type and dosage of chemical amendment can be with
Determination is optimized by response phase method or orthogonal experiment.
In step (3), all chemical amendments are necessary for solution or wiring solution-forming, and the viscosity of chemical conditioning agent solution is small
Minimum value in sewage sludge viscosity standard section.
In step (4), it is dehydrated to be carried out by the way of plate compression.
The present invention is further detailed combined with specific embodiments below.
It in following embodiment unless otherwise instructed, then is common technical means in the art used by showing.
Embodiment 1
Process shown in Figure 1, by moisture content be 81.2% landfill sludge dilute, obtain concentration be 135,125,115,
105, the dilution sludge of 95,85,75,65,55,45,35,25 and 15g/L.Viscosity is carried out to the dilution landfill sludge of above-mentioned concentration
Measurement obtains a viscograph, glues to the excess sludge (concentration 52.1g/L) for the sewage plant for generating the landfill sludge
Degree, which measures, obtains a viscosity change section, and the relationship of viscosity section and viscograph is as shown in Figure 3.As shown in figure 3, viscosity region
Between with dilution landfill sludge viscograph intersection at, it is known that and referring to above-described embodiment, will equally fill sludge
It is diluted to after concentration is 50.6g/L and 123.4g/L 9.9% also using Lime-Injecting as sludge butt respectively, ferric trichloride adds
Filters pressing after being handled for the 4.6% of sludge butt, obtained moisture percentage in sewage sludge are respectively 67.9% and 80.4%, are illustrated dilute
In the case where releasing excessively (50g/L), the pharmacy effect under identical dosage is diluted, and is diluted in insufficient situation, and medicament is thrown
Unevenness is mixed after adding, and is reacted insufficient and is resulted in moisture content of the cake height.
, the viscosity for the landfill sludge that concentration is 95g/L after dilution, can be in the viscosity interval range of the plant excess sludge
Carry out adding for conditioning medicament.It is carried out by dosage of the response surface design to lime/ferric trichloride composition chemical amendment
After optimization, obtain Lime-Injecting be sludge butt 9.9%, it is the 4.6% of sludge butt that ferric trichloride, which adds, after processing again into
Row filters pressing, obtained moisture content of the cake are 54.9%.
Embodiment 2
Referring to the treatment process of embodiment 1, carried out under identical dosage by filling sludge to the different dilution of concentration
Lime and ferric trichloride add experiment to study the influence after diluted excessively to cachaza moisture content.To concentration be 90,80,
70, the dilution landfill sludge of 60,50 and 40g/L carries out identical conditioning adding of agent (lime 12%, trichlorine based on sludge butt
Change iron 5.5%) filters pressing experiment is carried out afterwards, result is as shown in Figure 2.As shown in Figure 2, under identical added amount of chemical, dilution is filled out
When sludge concentration is 90g/L, moisture content of the cake is 46.9% after conditioning dehydration.With the increase of dilute strength, moisture content of the cake
Constantly increase.When diluted concentration is reduced to 40g/L, improving dewatered moisture content of the cake is 52.8%.Illustrate identical add
The conditioning pharmacy effect of amount is also diluted with the increase of sludge extension rate, so that conditioning effect is deteriorated.It further illustrates and closes
Suitable extension rate can not only improve the conditioning effect of dilution landfill sludge afterwards, moreover it is possible to reduce the processing load of dehydration liquid.
Embodiment 3
Landfill sludge is pre-processed by the process flow of Fig. 1.Moisture content with sludge liquor to 0.57 ton is
80.8 ± 0.7% landfill sludge is diluted, and is diluted to volume 1m3Landfill moisture percentage in sewage sludge afterwards is 90.6 ± 0.3%.It is right
After dilution landfill sludge carries out conditioning adding of agent (being 9.9% by the lime that sludge butt adds, ferric trichloride 4.6%),
Deeply dehydrating sludge is carried out by plate and frame filter press, obtains mud cake and 0.7 ± 0.01m3Sludge liquor.Wherein have
0.43m3For filling the dilution of sludge, residue dehydration liquid, which enters in the percolation liquid treating system of sewage plant, to be handled, so
Circulating and recovering dehydration liquid dilution fills sludge 5 times and measures the moisture content of the cake after conditioning.As shown in Table 1, in identical medicament
Under dosage, as dehydration liquid circulating and recovering number increases, moisture content of the cake is integrally in decreasing trend, and average moisture content of the cake is
56.6 ± 0.5%.Illustrate that sludge liquor can be used for circulating and recovering dilution landfill sludge, and it is aqueous to improve dewatered mud cake
Rate is respectively less than 60%.
Table 1
Embodiment 4
Compared with Example 1, the overwhelming majority is identical, in addition in the present embodiment: the moisture content for filling sludge is 65%.
Embodiment 5
Compared with Example 1, the overwhelming majority is identical, in addition in the present embodiment: the moisture content for filling sludge is 95%.
In the above various embodiments, in chemical conditioning reagent used, lysis reagent and framework construction body can be to sow
Optimum ad dition amount is replaced and obtained to any combination in class, if lysis reagent can be ferric trichloride, Fenton reagent, ferric sulfate of polymerized silica
Or perhaps several framework construction bodies are one of lime, flyash or sludge incineration ash or several to one of sodium hypochlorite
Kind.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (7)
1. a kind of deep dehydration pretreating process for filling sludge, which comprises the following steps:
(1) it takes the excess sludge of sewage treatment plant to carry out viscosimetric analysis, obtains sewage sludge viscosity standard section；
(2) the sewage sludge viscosity standard section obtained based on step (1), is diluted landfill sludge to be processed, then measures it and glue
Degree so that the viscosity of the landfill sludge after dilution is in sewage sludge viscosity standard section, and is less than sewage sludge viscosity standard section
Maximum value；
(3) chemical amendment is added into the landfill sludge after the completion of step (2) gained dilution, improves, then, dehydration obtains
Moisture content is lower than 60% deep dehydration pretreating sludge, and it is dilute to recycle landfill sludge of the sludge liquor in step (2)
It releases.
2. a kind of deep dehydration pretreating process for filling sludge according to claim 1, which is characterized in that step (2)
In, the moisture content of landfill sludge to be processed is 65~95%.
3. a kind of deep dehydration pretreating process for filling sludge according to claim 1, which is characterized in that step (3)
In, the chemical amendment is the composite conditioner of lysis reagent and framework construction body composition.
4. a kind of deep dehydration pretreating process for filling sludge according to claim 3, which is characterized in that step (3)
In, the lysis reagent is one of ferric trichloride, Fenton reagent, ferric sulfate of polymerized silica or sodium hypochlorite or several.
5. a kind of deep dehydration pretreating process for filling sludge according to claim 3, which is characterized in that step (3)
In, the framework construction body is one of lime, flyash or sludge incineration ash or several.
6. a kind of deep dehydration pretreating process of landfill sludge according to claim 1 or 3 or 4 or 5, feature exist
In in step (3), chemical amendment is solution or wiring solution-forming, and its viscosity is less than the minimum value in sewage sludge viscosity standard section.
7. the deep dehydration pretreating process of any a kind of landfill sludge according to claim 1, which is characterized in that step
(4) it in, is dehydrated to be carried out by the way of plate compression.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661366A (en) * | 2020-12-22 | 2021-04-16 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN113069709A (en) * | 2021-03-30 | 2021-07-06 | 北京荣创岩土工程股份有限公司 | Treatment process for stably dehydrating ammonia-soda process alkaline residue |
| CN113336415A (en) * | 2021-05-31 | 2021-09-03 | 沈阳理工大学 | Composite reagent for reducing water content of sludge and use method thereof |
| CN115140912A (en) * | 2022-06-29 | 2022-10-04 | 上海市政工程设计研究总院（集团）有限公司 | Sludge suction device and landfill sludge ex-warehouse system |
| CN115784558A (en) * | 2022-12-13 | 2023-03-14 | 惠州市精田机械制造有限公司 | Sludge dehydrating agent for reducing hydrophilicity of organic matters |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57180500A (en) * | 1981-04-30 | 1982-11-06 | Unitika Ltd | Dehydration treatment for organic sludge |
| CN105645732A (en) * | 2016-02-19 | 2016-06-08 | 蚌埠圻润环境工程科技有限公司 | Combined chemical conditioning method for deep drying of dehydrated sludge |
| CN105776785A (en) * | 2016-01-18 | 2016-07-20 | 同济大学 | Diluting, conditioning and curing treatment method for sludge subjected to non-standardized treatment |
| CN106698888A (en) * | 2016-12-29 | 2017-05-24 | 华中科技大学 | Method for optimizing added amount of chemical conditioner for deep dehydration of sludge |
| CN108002672A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of method handled using pyrohydrolysis pretreating process biochemical sludge |
-
2018
- 2018-12-14 CN CN201811532911.3A patent/CN109485230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57180500A (en) * | 1981-04-30 | 1982-11-06 | Unitika Ltd | Dehydration treatment for organic sludge |
| CN105776785A (en) * | 2016-01-18 | 2016-07-20 | 同济大学 | Diluting, conditioning and curing treatment method for sludge subjected to non-standardized treatment |
| CN105645732A (en) * | 2016-02-19 | 2016-06-08 | 蚌埠圻润环境工程科技有限公司 | Combined chemical conditioning method for deep drying of dehydrated sludge |
| CN108002672A (en) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of method handled using pyrohydrolysis pretreating process biochemical sludge |
| CN106698888A (en) * | 2016-12-29 | 2017-05-24 | 华中科技大学 | Method for optimizing added amount of chemical conditioner for deep dehydration of sludge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112661366A (en) * | 2020-12-22 | 2021-04-16 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN112661366B (en) * | 2020-12-22 | 2022-07-05 | 湖南军信环保股份有限公司 | Method and system for cooperative sludge dewatering treatment of aged leachate of refuse landfill |
| CN113069709A (en) * | 2021-03-30 | 2021-07-06 | 北京荣创岩土工程股份有限公司 | Treatment process for stably dehydrating ammonia-soda process alkaline residue |
| CN113336415A (en) * | 2021-05-31 | 2021-09-03 | 沈阳理工大学 | Composite reagent for reducing water content of sludge and use method thereof |
| CN115140912A (en) * | 2022-06-29 | 2022-10-04 | 上海市政工程设计研究总院（集团）有限公司 | Sludge suction device and landfill sludge ex-warehouse system |
| CN115784558A (en) * | 2022-12-13 | 2023-03-14 | 惠州市精田机械制造有限公司 | Sludge dehydrating agent for reducing hydrophilicity of organic matters |
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| CN109485230B (en) | 2022-07-15 |
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